Engine mount inserts ... don't !

[GLImages]

Originally Posted by 10/10ths

....you will just lose power.



The stiffer motor mounts trigger the knock sensors and the engine management will retard ignition timing to prevent what it thinks is detonation.



I’ve seen dyno tests to prove it.



I promise you that every Porsche out there with inserts or polyurethane bushings in their motor mounts now own slower cars.



So if you want more noise/vibration/harshness AND a slower car, by all means, send your hard earned money to the aftermarket purveyors who feast on all of the uninformed new Porsche owners who are now buying these old cars because they have depreciated to the point where they are cheaper than new Corollas.



You have been warned.



Just don’t do it.



Cheers.

If you can see the effects on a dyno, I would think you would be able to see this in durametric. Should be easy to test I think. Can you see what the cams are doing live with a durametric? I don't have one, so not sure. If so the ecm should be pulling timing when detecting knock right? Drive around with durametric running, what does the timing do?

Question, do porsches of this year show 'pending' codes? My other cars do, but are newer canbus cars. I would think there would be at least a 'pending' code if it detects any knock at all, then sets a full blown code once it hits the requirements (whatever those are, detection during a certain # of drive cycles, etc).